What is the product of -20 over 5+5

Henry is an avid reader, he devours 90 pages in half an hour how many pages has henry read per minute?

Write an inequality and solve each problem. for exercises 11 and 12, interpret the solution.

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.